EP4527157A1 - Guide de connecteurs pour onduleur comportant un logement de capteur de température - Google Patents
Guide de connecteurs pour onduleur comportant un logement de capteur de températureInfo
- Publication number
- EP4527157A1 EP4527157A1 EP23725386.9A EP23725386A EP4527157A1 EP 4527157 A1 EP4527157 A1 EP 4527157A1 EP 23725386 A EP23725386 A EP 23725386A EP 4527157 A1 EP4527157 A1 EP 4527157A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- connector guide
- temperature sensor
- housing
- power modules
- power module
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/14—Mounting supporting structure in casing or on frame or rack
- H05K7/1422—Printed circuit boards receptacles, e.g. stacked structures, electronic circuit modules or box like frames
- H05K7/1427—Housings
- H05K7/1432—Housings specially adapted for power drive units or power converters
- H05K7/14322—Housings specially adapted for power drive units or power converters wherein the control and power circuits of a power converter are arranged within the same casing
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/14—Mounting supporting structure in casing or on frame or rack
- H05K7/1422—Printed circuit boards receptacles, e.g. stacked structures, electronic circuit modules or box like frames
- H05K7/1427—Housings
- H05K7/1432—Housings specially adapted for power drive units or power converters
- H05K7/14324—Housings specially adapted for power drive units or power converters comprising modular units, e.g. DIN rail mounted units
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2089—Modifications to facilitate cooling, ventilating, or heating for power electronics, e.g. for inverters for controlling motor
Definitions
- the present invention relates to the field of electrical inverter assemblies. It concerns in particular inverters adapted to control the operation of an electric traction machine of an electric or hybrid vehicle, for example a motor vehicle.
- An inverter is, in the field of power electronics, a voltage converter used to generate alternating voltages and currents from an electrical energy source of different voltage or frequency.
- An inverter makes it possible in particular to generate alternating voltages adapted to the operation of an electric motor, synchronous or asynchronous, from a direct voltage source, such as an electric battery.
- a polyphase inverter for example three-phase, makes it possible to chop a direct voltage into a balanced polyphase (for example three-phase) sinusoidal voltage.
- the inverters comprise power modules comprising electronic switches, for example IGBTs (IGBT meaning “Insulated Gate Bipolar Transistor”), the openings and closings of which are controlled in a manner appropriate.
- IGBTs Insulated Gate Bipolar Transistor
- Such an inverter thus comprises an assembly of several components: electronic cards (control card and power card or "driver card”, possibly combined into a single card), a certain number of power modules, electrical connections in the form of interconnection bars (generally referred to by the English term “busbars”) and sensors.
- the electronic card(s) are formed on printed circuits, commonly called “PCB” (from the English “Printed Circuit Board”).
- the inverter components are generally placed in a protective housing also called a casing.
- the power modules include male control connectors in the form of control pins.
- Pins are generally called “pins” according to English terminology.
- the corresponding female connectors, intended to receive these control pins of the power modules can be reception holes formed in the electronic card (control card or single electronic card) and allowing the welding of the pins once they have been correctly introduced into the through the electronic card.
- a connector guide is a part, for example made of plastic, which has calibrated passages into which the male connectors of the power modules are inserted in order to hold them in the desired position and orientation in order to simultaneously be able to place them perfectly opposite each other.
- document FR3044861 discloses an alternator-starter type system comprising power modules and an electronic card support forming a connector guide.
- document EP 3 177 122 A1 describes an example of an electronic card support which includes means for guiding electrical connection elements of electronic power modules towards the card.
- power modules may include an integrated temperature sensor.
- temperature sensors external to the power modules and adapted to provide a representative measurement of the temperature of the power modules can be provided.
- the temperature can advantageously be measured in contact with a cooling plate of the power modules, by a temperature sensor carried by the control card.
- the temperature sensor can thus include a thermistor fixed on a printed circuit which is rigidly linked to the electronic control card (or where appropriate the single main electronic card) of the inverter.
- mounting a temperature sensor that is not integrated into the power modules is complex in the environment of an inverter for several reasons.
- the present invention thus aims to propose a device solving all or part of the problems mentioned above.
- the invention thus relates to a connector guide for an inverter comprising at least two power modules, namely at least a first power module and a second power module, the connector guide comprising a substantially planar rigid body in which are formed orifices for the passage of control pins of the power modules, said orifices being calibrated and positioned so as to conform the position and orientation of said control pins.
- the body of the connector guide comprises a so-called intermediate portion which is intended to be positioned between the first power module and the second power module, said intermediate portion comprising a housing adapted to receive a temperature sensor.
- the inverter power modules can be placed side by side in the same plane. They may in particular have a flat surface aligned in the same plane.
- the connector guide thus makes it possible to guarantee the position and orientation of the control pins of the power modules when assembling an inverter, and to position one (or more) temperature sensors in the inverter. It also guarantees, where applicable, the position and orientation of the connectors of the temperature sensor(s). These functions are performed using a single part, which simplifies assembly. In particular, it is not necessary to use a sensor temperature sensor integrated into the power modules, and, by taking advantage of the space between two power modules to integrate the temperature sensor, the dimension chain for assembling the temperature sensor is very simple. The temperature sensor can therefore be installed reliably.
- the holes for the passage of the pins may have a straight cylindrical upper part and a flared lower part.
- the flared lower part of all or part of the orifices can for example be conical.
- the flared lower portion of two adjacent ports may include a straight middle wall.
- connection pin hole configurations allow a relatively significant correction in the event of inaccuracy in their relative positions and promote their guidance when installing the connector guide on the power modules.
- the straight middle wall allows the pins to be separated effectively and prevents two pins from inserting into the same hole.
- the housing adapted to receive a temperature sensor is advantageously open on a lower face of the body of the connector guide so as to be able to insert the temperature sensor into the housing by said lower face and place it in abutment on an upper stop of said housing.
- the housing adapted to receive a temperature sensor is open on an upper face of the body of the connector guide so as to be able to insert the temperature sensor into the housing by said upper face, the housing further comprising a stop allowing the placement in support of the temperature sensor, said housing further comprising a bottom opening allowing the temperature sensor to protrude, the housing also being provided with a device for retaining the temperature sensor.
- the connector guide proposed in the invention can therefore be adapted to different types of temperature sensors.
- the body of the connector guide may include a first covering portion intended to at least partially cover the first power module, and the body of the connector guide includes a second covering portion intended to at least partially cover the second power module.
- the intermediate portion is then located between the two covering portions, which it connects.
- the at least partial covering of the power modules makes it possible to stiffen the connector guide and guarantees the general cohesion of the stack of the different elements of the inverter.
- the connector guide may include three covering portions, for at least partial covering of three power modules.
- the inverter which implements such a connector guide thus comprises three power modules.
- This is the classic architecture of an inverter allowing the obtaining of a three-phase sinusoidal current, allowing for example the power supply of an electric traction machine of a motor vehicle.
- the connector guide may include at least one wall orthogonal to a general plane of extension of the body of the connector guide. Such a wall guarantees the electrical insulation of the elements it separates, and in particular avoids the formation of electric arcs.
- the invention also relates to a system comprising:
- each power module comprising control pins
- each control pin of the power modules passing through an orifice in the connector guide
- the connector guide comprising at least one wall orthogonal to a general plane of extension of the body of the connector guide, and each power module comprising terminals which extend substantially parallel to the general plane of extension of the body of the connector guide, the at least one wall of the connector guide can be interposed between two adjacent terminals of a power module.
- the invention finally relates to an inverter comprising a system as previously described, further comprising an electronic card comprising female connectors to which the pins of the power modules are connected.
- FIG. 1 represents, in a schematic three-dimensional view, a connector guide according to one embodiment of the invention
- FIG. 2 represents, in another schematic three-dimensional view, the connector guide of Figure 1;
- Figure 3 shows, in a schematic three-dimensional view, a system comprising the connector guide of Figure 1;
- FIG. 4 shows, in another schematic three-dimensional view, the system of Figure 3;
- Fig 5 illustrates, in a schematic sectional view, an aspect of certain embodiments of the present invention
- FIG. 6 illustrates, in a partial three-dimensional schematic view, another aspect of certain embodiments of the present invention.
- FIG. 7 represents, in a partial schematic three-dimensional view, the mounting of a temperature sensor on a connector guide conforming to one embodiment of the invention
- FIG. 8 shows, in a partial sectional view, the temperature sensor of Figure 7 installed in the connector guide
- FIG. 9 represents, in a partial schematic view in three dimensions, the mounting of another temperature sensor on a connector guide conforming to one embodiment of the invention.
- FIG. 10 shows, in a partial sectional view, the temperature sensor of Figure 9 installed in the connector guide
- FIG. 11 represents, in a schematic three-dimensional view, a connector guide conforming to another embodiment of the invention.
- Figure 1 and Figure 2 represent a connector guide 1 according to one embodiment of the invention.
- the connector guide 1 is advantageously formed in one piece, that is to say it is advantageously in one piece. It can be made of a plastic material (including composite). It can in particular be molded by injection of a plastic material.
- the connector guide comprises a body 2, which is flat and which extends in a general plane of extension P.
- the body 2 has an upper face 3 and a lower face 4.
- the upper face 3 is intended to be oriented towards the control card of the inverter equipped with the connector guide, and the lower face 4 is intended to be oriented towards the inverter power modules.
- connection pin or more simply “pin”, is meant a male connector in the form of a rigid metal strip adapted to be inserted into a corresponding female connector.
- each orifice 5 is dimensioned to allow the passage of a single connection pin.
- the holes 5 are distributed and configured on the body 2 of the connector guide 1 so as to guarantee precise positioning and orientation of the pins which pass through them.
- each orifice 5 comprises an upper part 6 which is straight cylindrical and a lower part 7 which is flared.
- the flared lower part 7 allows a slight correction of the orientation and positioning of the pins 8 between them when installing the connector guide.
- the upper part 6 ensures good retention of the pin 8 in position and orientation.
- certain orifices have a conical flared lower part 7.
- certain adjacent orifices 5 are too close together to each have a conical lower part.
- the adjacent conical parts of these orifices then overlap spatially. This increases the risk of a pin 8 being guided into a hole it is not intended to pass through.
- a middle wall 9 is formed to separate the flared parts of two adjacent orifices 5.
- the connector guide 1 is configured to ensure the relative positioning and the relative orientation of the control pins of three power modules, and is thus intended to equip an inverter comprising three power modules.
- the body 2 of the connector guide 1 has three covering portions each intended to cover, in whole or in part, a power module.
- the connector guide 1 thus comprises: a first covering portion 10, a second covering portion 11, and a third covering portion 12.
- the body of the connector guide comprises a solid intermediate portion.
- the body 2 of the connector guide 1 comprises a first intermediate portion 13 between the first covering portion 10 and the second covering portion 11 and a second intermediate portion 14 between the second covering portion 11 and the third covering portion 12.
- Each intermediate portion 13, 14, is thus produced in the form of an arm, and is intended to be positioned between two power modules (above said power modules).
- the intermediate portion includes a housing adapted to receive a temperature sensor.
- first intermediate portion 13 and the second intermediate portion 14 each include a housing adapted to receive a temperature sensor.
- housing adapted to receive a temperature sensor.
- the connector guide 15 of the first intermediate portion 13 is adapted to receive a first type of temperature sensor while the housing 15 of the second intermediate portion 14 is adapted to receive a second type of sensor.
- the connector guide more frequently comprises a single temperature sensor, or two sensors of the same type.
- the temperature sensor 16 installed in the housing 15 of the first intermediate portion 13 is shown in more detail in Figure 7 and Figure 8.
- the temperature sensor 16 of Figure 7 and Figure 8 comprises a sensitive surface 17 which must be brought into contact with the surface whose temperature is to be measured.
- the sensitive surface 17 is in the lower part of a main part 18 of the temperature sensor 16.
- Two pins 8 come out of the main part 18, and are intended to deliver the signal from the temperature sensor 16.
- the temperature sensor 16 is introduced into the housing 15 from below the connector guide.
- the opening of the housing 15 which makes it possible to introduce the temperature sensor 16 is located on the lower face 4 of the body 2 of the connector guide 1.
- the housing 15 includes in this case an upper stop 19 on which an upper face of the temperature sensor 16 rests.
- a clipping system can also be provided, preventing the temperature sensor from
- the temperature sensor Once the temperature sensor is in the use position, as shown in Figure 8, the sensitive surface 17 of the sensor is in contact with a cooling plate 20, which serves to evacuate thermal energy from the power modules of the inverter equipped.
- the distance between the upper stop 19 and the cooling plate 20 is slightly less (for example 0.2 mm) than the distance between the upper face of the temperature sensor 16 and the sensitive surface 17.
- the upper stop 19 can be configured to have the flexibility necessary to allow mounting and ensure a pressure force on the temperature sensor which guarantees its contact on the cooling plate 20.
- the temperature sensor 16 installed in the housing 15 of the second intermediate portion 14 is shown in more detail in Figure 9 and Figure 10.
- the temperature sensor 16 of Figure 9 and Figure 10 is of the type comprising a printed circuit 21.
- a thermistor 22, for example of the “CTN” type (for “negative temperature coefficient”) is installed at a lower end 23 of the printed circuit 21.
- Pins 8 (here four in number) are linked to the printed circuit 21, and are intended to deliver the signal from the temperature sensor 16.
- the temperature sensor 16 is introduced into the housing 15 from above the connector guide.
- the opening of the housing 15 which allows the temperature sensor 16 to be introduced therein is located on the upper face 3 of the body 2 of the connector guide 1.
- the printed circuit 21 comprises two fins 24, which come to rest on a stop 25 of the housing 15.
- the housing 15 is open in its lower part, that is to say it has an opening in its bottom, so to be able to place the thermistor 22 in contact with the surface whose temperature must be measured.
- the thermistor 22 is in contact with a cooling plate 20, which serves to evacuate thermal energy from the power modules of the inverter equipped.
- the retaining device exerts a pressure force on the temperature sensor 16 which guarantees its contact on the cooling plate 20.
- a product ensuring high thermal conduction for example a thermally conductive putty (often referred to by the English expression "gap filler") or a thermally conductive interface (often referred to by the English expression "gap pad” ) can be used to provide heat conduction between the cooling plate and the temperature sensor.
- the connector guide 1 can include walls 27 orthogonal to said general plane of extension P of the body of the connector guide 2. The function of these walls 27 is explained in more detail with reference in Figure 6.
- Figure 6 represents, in a partial view, a power module 28 installed under the connector guide 1 of Figure 1 and Figure 2.
- the power module has terminals 29, or “external connections” (also designated by the English expression “lead frame”) which allow the connection of the power module to a direct current electrical source on the one hand and to a phase of an electrical machine on the other hand.
- the upper face 3 of the connector guide is oriented upwards and visible in the foreground.
- the lower face 4 of the connector guide 1 is oriented upwards, so that the cooling plate 20 is visible in the upper part of the system, in the foreground.
- FIG. 3 and Figure 4 make it possible to visualize that the power modules 28 are interposed between the connector guide 1 and the cooling plate 20.
- the cooling plate 20 is in contact with the power modules and allows dissipation of the thermal energy from the power modules 28 in the air or in a cooling liquid, via a dissipation system 30 which may for example include numerous fins.
- the power modules of the inverter are placed side by side in the same plane. This provision is applicable to numerous embodiments.
- the thermal sensor(s) 16 is brought into contact with the cooling plate, extending between two power modules 28.
- the connector guide 1 being installed on the power modules 28, a first power module is partially covered by the first covering portion 10 of the connector guide 1.
- a second power module is partially covered by the second covering portion 11 of the connector guide 1.
- a third power module is partially covered by the third covering portion 12 of the connector guide 1.
- each power module 18 pass through the connector guide 1 through the holes 5 it contains, so that their positioning and their relative orientation are corrected and then maintained. It is then possible to design the system with an electronic control card (or a single electronic card), being certain that the control pins will insert precisely and simultaneously into the female connectors of the electronic card.
- the female connectors are for example holes allowing pins 8 to pass through the electronic card and solder them there.
- a screen for example made of steel or aluminum, can optionally be interposed between the connector guide 1 and the electronic card, while being kept at a distance from the electronic card (for example using insulating spacers) .
- the connector guide can also include means allowing its indexing in position and its fixing in the casing of an inverter. Indexing can be carried out using calibrated orifices 32 for the passage of pins or indexing fingers.
- the connector guide may in particular include two calibrated orifices, produced with low position and dimension tolerances.
- Fixing can be provided for example by screws, through fixing holes 31 equipped, where appropriate, with inserts, for example metal.
- Figure 11 represents, by way of example, a connector guide 1 according to another embodiment of the invention.
- the connector guide of Figure 11 although presenting a very different general configuration, is functionally similar to the connector guide of Figures 1 to 10. We can therefore generally refer to the description of Figures 1 to 10 for the connector of the Figure 11. Compared to Figures 1 to 10, the same reference signs are used in Figure 11 to designate the same elements.
- the connector guide 1 is shown in Figure 11 with its lower face 4 directed upwards, in the foreground in Figure 11.
- the connector guide 1 comprises a body 2, which is flat and which extends in a general plane of extension P.
- the connector guide differs essentially from that of Figures 1 to 10 in that it does not include any covering portion of the power modules, or very reduced covering portions.
- the connector guide being adapted to an inverter comprising three power modules, the first intermediate portion 13 and the second intermediate portion 14 are in the form of arms intended to be positioned between the power modules, above them, of the inverter equipped with the connector guide. Depending on the width of these arms forming an intermediate portion, they may or may not cover the edge of the power modules located on either side.
- the connector guide of Figure 11 is thus in the general form of a substantially straight main branch 33, in which the orifices 5 are provided for the passage of male connectors, to which are linked two perpendicular branches respectively forming the intermediate portion 13 and the second intermediate portion 14. Extensions 34 are provided to allow the centering and alignment of the connector guide using the calibrated orifices 32.
- Ribs 35 make it possible to structurally stiffen the connector guide.
- the ribs 35 form a geometric pattern capable of stiffening the connector guide, comprising for example shapes that are little or not deformable (triangles, hexagons, etc.).
- This stiffening is important in the configuration of the connector guide shown because it includes an elongated part and centered fixing holes 31. This stiffening also helps avoid possible vibration problems during the manufacturing of the inverter.
- the manufacture of the connector guide by plastic injection is also facilitated because the ribs 35 make it possible to maintain a constant thickness for the entire connector guide.
- the invention thus developed jointly makes it possible to guarantee the position and orientation of the control pins of the power modules during the assembly of an inverter, and to position one (or more) temperature sensors in the inverter .
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Details Of Connecting Devices For Male And Female Coupling (AREA)
- Inverter Devices (AREA)
- Connector Housings Or Holding Contact Members (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2204797A FR3135865B1 (fr) | 2022-05-19 | 2022-05-19 | Guide de connecteurs pour onduleur comportant un logement de capteur de température |
| PCT/FR2023/050565 WO2023222965A1 (fr) | 2022-05-19 | 2023-04-19 | Guide de connecteurs pour onduleur comportant un logement de capteur de température |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4527157A1 true EP4527157A1 (fr) | 2025-03-26 |
Family
ID=82320075
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23725386.9A Pending EP4527157A1 (fr) | 2022-05-19 | 2023-04-19 | Guide de connecteurs pour onduleur comportant un logement de capteur de température |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US12274018B1 (fr) |
| EP (1) | EP4527157A1 (fr) |
| FR (1) | FR3135865B1 (fr) |
| WO (1) | WO2023222965A1 (fr) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3165115A1 (fr) * | 2024-07-29 | 2026-01-30 | Nidec Psa Emotors | Structure de blindage électromagnétique multifonctions pour onduleur |
| DE102024208197A1 (de) * | 2024-08-28 | 2026-03-05 | Volkswagen Aktiengesellschaft | Führungs- und Isolationsplatte für eine elektronische Hochvoltvorrichtung, elektronische Hochvoltvorrichtung mit einer Führungs- und Isolationsplatte und Verfahren zur Herstellung einer elektronischen Hochvoltvorrichtung |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2204797B1 (fr) | 1972-10-26 | 1976-10-29 | Crouzet Roger | |
| US9831482B2 (en) * | 2013-09-06 | 2017-11-28 | Johnson Controls Technology Company | Battery module lid system and method |
| FR3044861B1 (fr) * | 2015-12-02 | 2018-01-19 | Valeo Systemes De Controle Moteur | Support d'une unite electronique, dispositif electrique le comprenant et machine electrique comprenant ledit dispositif electrique |
| FR3044862B1 (fr) * | 2015-12-02 | 2020-10-16 | Valeo Systemes De Controle Moteur | Support d'une carte electronique, ensemble d'une carte electronique et d'un tel support, convertisseur de tension le comprenant et machine electrique pour vehicule automobile le comprenant |
| US10917992B2 (en) * | 2017-01-13 | 2021-02-09 | Cree Fayetteville, Inc. | High power multilayer module having low inductance and fast switching for paralleling power devices |
| US10778117B2 (en) * | 2018-04-17 | 2020-09-15 | Chongqing Jinkang New Energy Vehicle Co., Ltd. | Inverter module of an electric vehicle |
-
2022
- 2022-05-19 FR FR2204797A patent/FR3135865B1/fr active Active
-
2023
- 2023-04-19 EP EP23725386.9A patent/EP4527157A1/fr active Pending
- 2023-04-19 US US18/842,783 patent/US12274018B1/en active Active
- 2023-04-19 WO PCT/FR2023/050565 patent/WO2023222965A1/fr not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| US12274018B1 (en) | 2025-04-08 |
| FR3135865B1 (fr) | 2024-04-12 |
| US20250113455A1 (en) | 2025-04-03 |
| WO2023222965A1 (fr) | 2023-11-23 |
| FR3135865A1 (fr) | 2023-11-24 |
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